It is crucial that the upper back and neck are held in an erect position to give support for the head.

重要的是：上背和颈部要挺直以支撑头部，这一点很重要。

《柯林斯英汉双解大词典》

Once you're in position, slightly tilt your head back and extend the tip of your tongue just past your bottom lip.

到达位置后，轻轻向后仰头，伸舌到稍微超过下唇。

youdao

Every now and then he withdraws his head as if by chance. The reader will anxiously devour one or two words before Luke moves back into position.

有时他会装作偶然地移开头，那读者便会抓紧时间在他的头移回来之前读上一到两个词。

youdao

He was supposed to get himself into a delta position - head down, arms swept back - as soon as possible after leaving his capsule.

BBC: Skydiver Felix Baumgartner breaks sound barrier

However, Buchanan's position as head of the party is being challenged by Perot loyalists, who back a different candidate -- former nuclear physicist John Hagelin.

CNN: Treasury transfers $12.6 million to Buchanan